<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>操作数据库</title>
    <style>
        body {
            font-family: 'Arial', sans-serif;
        }
        table {
            width: 100%;
            border-collapse: collapse;
        }
        th, td {
            padding: 10px;
            border: 1px solid #ddd;
            text-align: left;
        }
        th {
            background-color: #f2f2f2;
        }
        tr:nth-child(even) {
            background-color: #f9f9f9;
        }
    </style>
</head>
<body>

<center><h1>清空数据库成功</h1></center>

</body>
</html>